This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Convert the volume of the solution to litres. The given volume is 500 cm^3. Volume = 500 cm^3 × 1 L1000 cm^3 = 0.500 L Step 2: Calculate the moles of hydrogen ions (H^+) in the solution. The concentration of hydrogen ions is 0.3 M. Moles of H^+ = Concentration of H^+ × Volume of solution Moles of H^+ = 0.3 mol/L × 0.500 L Moles of H^+ = 0.15 mol Step 3: Calculate the moles of the tribasic acid. A tribasic acid produces 3 moles of hydrogen ions for every 1 mole of acid. Let the acid be H_3A. The dissociation is: H_3A → 3H^+ + A^3- Therefore, the moles of acid are one-third of the moles of hydrogen ions. Moles of acid = Moles of H^+3 Moles of acid = 0.15 mol3 Moles of acid = 0.05 mol Step 4: Calculate the relative molecular mass (molar mass) of the acid. The mass of the acid is 4.9 g. Relative molecular mass = Mass of acidMoles of acid Relative molecular mass = 4.9 g0.05 mol Relative molecular mass = 98 g/mol The relative molecular mass of the acid is 98. Last free one today — make it count tomorrow, or type /upgrade for unlimited.